The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 2013
Filed:
Nov. 28, 2008
Askell Finnestad, Tananger, NO;
Hakan Lind, Skärholmen, SE;
Carsten Hasberg, Karlsruhe, DE;
Stefan Hensel, Karlsruhe, DE;
René Rütters, Weinheim, DE;
Askell Finnestad, Tananger, NO;
Hakan Lind, Skärholmen, SE;
Carsten Hasberg, Karlsruhe, DE;
Stefan Hensel, Karlsruhe, DE;
René Rütters, Weinheim, DE;
Bombardier Transportation GmbH, Berlin, DE;
Abstract
A railway positioning system provides an on-board speed measurement device () inducing eddy currents in the wayside structure at two spots along the travelling direction, measuring the variations of the magnetic field emitted by the wayside structure and determining position and speed by correlating themeasured signals known from U.S. Pat. No. 5,825,177 and a wayside coded tag () providing a coding recognizable by the onboard speed measurement device (). The coded tag () consists of a bar () with several slots () in which metal blocks () of different sizes are mounted. The block sizes and positions are selected to represent a coding according to Quadrature Amplitude Modulation.